Samson 3766 - After-Sales Service; Servicing Explosion-Protected Devices; Maintenance and Calibration

EB 8355-1 EN 49
After-sales service
7 After-sales service
7.1 Servicing explosion-pro-
tected devices
If a part of the device on which the explosion
protection is based needs to be serviced, the
device must not be put back into operation
untilaqualiedinspectorhasassesseditac-
cording to explosion protection require-
ments,hasissuedaninspectioncerticateor
given the device a mark of conformity.
Inspectionbyaqualiedinspectorisnotre-
quired if the manufacturer performs a rou-
tine test on the device before putting it back
into operation. Document the passing of the
routine test by attaching a mark of conformi-
ty to the device.
Replace explosion-protected components on-
ly with original, routine-tested components
by the manufacturer.
Devices that have already been used out-
side hazardous areas and are intended for
future use inside hazardous areas must
comply with the safety requirements placed
on serviced devices. Before being operated
inside hazardous areas, test the devices ac-
cording to the specications for servicing
explosion-protected devices. Observe
EN60079-17 during servicing.
7.2 Maintenance and calibra-
tion
Interconnection with intrinsically safe circuits
to check or calibrate the equipment inside or
outside hazardous areas is to be performed
only with intrinsically safe current/voltage
calibrators and measuring instruments to
rule out any damage to components relevant
to explosion protection.
Observe the maximum permissible values
speciedinthecerticatesforintrinsically
safe circuits.